As we mentioned, two objects can weigh the same but behave very differently in the water. One may float, another may partway submerge in the surface, and one more may sink. The same applies to objects ...

Things float when they have less density than water, but sink when they have more. Can I keep my foil ball from sinking? Yes. Gently put the foil ball on top of your foil boat. What happens?

but that in sinking and floating, the density of the water matters, too. In fact, by comparing the density of an object to the density of water, you can predict whether an object will sink or float.

Wonder how a swim bladder works? Try this activity to find out! Background You probably know objects can sink or float when placed into water. In both cases the water moves out of the way ...

This means that the density of the overall object will increase and be more likely to sink. Ask students to explain how this principle can be used to explain how a weight belt can help a SCUBA diver ...

Introduction You probably know that when solid objects are placed in liquid, they can sink or float. But did you know that liquids can also sink or float? In fact, it is possible to stack ...

It’s the same reason you can float in the ocean but sink in the bath ... the downward force of the object on the water needs to be less than the upward force of the water pushing back against ...

Buoyancy is the upward force that water (or any fluid) exerts on an object ... will sink. That’s why ships have load lines (markings on the hull) to show the maximum safe weight they can carry.

So the more surface area an object has, the more water pushes back against it, helping it float. That's another reason why even big ships don't sink if they have the right shape. You can test ...